Other

Western Michigan University

Mitchel J Keil

John T Hoss

Daniel R Seelye

Jeremy L Iford

An adjustable spring rate pogo stick that incorporates two springs, with different spring rates, in parallel. This two-spring system can produce three different spring rates by allowing the user to engage one spring (first setting), the other spring (second setting) or both springs simultaneously (third setting). This pogo stick will accommodate weights of below 80 pounds to above 250 pounds.

Adjustable spring rate pogo stick

A multi-channel fiber-optic rotary joint having an elongate housing with a passageway extending therethrough. Fiber optic containing bundles are oriented in hollow shafts at the opposite ends of the passageway, which hollow shafts are rotatively supported in the housing. An alignment mechanism is provided inside the housing for effecting an optimizing of signal strength of signals transmitted between the respective fiber optic bundles.

Growing community of inventors

Mattawan, MI, United States of America

Mitchel J Keil